Snow training

"In colder temperatures your heart doesn't have to work as hard, you sweat less, and expend less energy, all of which means you can exercise more efficiently." Studies also have shown that exercising in cold weather can transform white fat, specifically belly and thigh fat, into calorie-burning brown fat.

Winter training makes you strong, flexible and tough,". "Strong because running through mud or snow builds running strength better than any gym, particularly the combination of leg lift and stride length, and the cardio capacity the effort produces.